Chemistry
Previous year question paper with solutions for Chemistry
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- The combing capacity of an element is called its _________
- Horizontal rows in periodic table are called ____________
- Negatively charged ions are called __________
- Volume of 1 mole of a substance is called_______
- M shell has _________ sub-shells.
- Hard water is not used in boilers for raising steam because is forms ________and __________.
- Any substance which has a tendency o donate a proton is called__________.
- Important ore of iron is_____________.
- Sulphide ores are concentrated by ______________process.
- The process of depositing Zinc on iron is called___________
- Producer gas is a mixture of CO & _____________.
- Percentage of fixed carbon can be determined by ___________ analysis.
- A good lubricant should have ________flash point.
- In a paint, gypsum is used as__________
- Fire clay bricks are ________ in nature.
- Polythene is a ____ polymer.
- Carbon monoxide is ___________ toxic than CO2
- Slow but continuous eating away of the metal by the chemical action with surrounding is called _________.
- Coating of iron with zinc by hot dipping method is called ..............
- Slag is a product of ......... and ........... .
- Brass is manily a mixture of ................ and ................... metal.
- Producer gas is mixture of ............ and .................... .
- Carbon monoxide is ............. toxic than CO2.
- The unit of heat is ............ .
- Acid refractories are resistant to ..............
- Pigment varnish is called ..............
- PAN means .......... .